Forede 4" Manual Rising Stem Gate Valve Pn10

• Customization: Available
• Media: Water
• Temperature: Ordinary Temperature
• Model NO.: Z41X
• Type: Dual-through
• Material: Ductile Iron
• Connection Form: Flange
• Pressure: Low Pressure
• Actuator: Manual
• Seal Surface: Wedge Gate Valve
• Thread Position of Valve Rod: Inside Gate Valve
• Usage: Open or Close
• Standard: GB
• Application: Water Industrial Usage, Fire Fighting
• Body Material: Ductile Iron
• Size: DN100
• Working Pressure: 10 Bar or 16 Bar
• Color: Red / Blue
• Transport Package: Wooden Case
• Specification: 60*45*48 cm
• Trademark: forede
• Origin: China
• Production Capacity: 50000 PCS /Year

Product Description

Product Description

Forede® is proud to offer the Rising Stem Gate Valve, a high-quality valve that is designed to meet the needs of various industries. This gate valve is made from durable and sturdy materials, including Ductile Iron for the body and bonnet, and 2 Cr13 Stainless Steel for the stem. Additionally, the Seal Material is also made of Ductile Iron, which is coated with NBR to provide long-lasting protection and durability.

The valve is designed with ANSI 150 LB / GB / BS Standards flange ends, making it easy to install and integrate into your existing system. And thanks to its OS&Y type, it is easy to operate and maintain, ensuring steady and reliable performance. With a working pressure of 1.6 Mpa, it can handle the toughest industrial conditions without any issues.

One of the unique features of the Forede® Rising Stem Gate Valve is its surface finishing. The valve is coated with epoxy in red or blue, not only to enhance its appearance but also to protect it from corrosion and wear. This ensures that the valve remains in great condition for a long time, providing excellent value for money.

The Forede® Rising Stem Gate Valve is the perfect choice for those looking for a high-quality, reliable valve. Its design and construction ensure that it can withstand even the toughest operating conditions, making it an excellent investment for any industrial system. Whether you need it for water, gas, or oil applications, this valve is sure to meet your needs and exceed your expectations.
 

 

Product Parameters

 

Body Material	Ductile Iron, QT450
Bonnet Material	Ductile Iron ,OT450
Stem Material	2 Cr13 Stainless Steel
Seal Material	Ductile Iron , QT450, Coverd By NBR
Flange End	ANSI 150 LB / GB / BS Standard
Valve Type	OS&Y
Working Pressure	1.6 Mpa
Surface Finishing	Epoxy Red or Blue

Packaging & Shipping

 

FAQ

1. Benefit of OS&Y Design

Q: What's the advantage of the "OS&Y (Outside Screw & Yoke)" design in this gate valve?
A: The OS&Y design lets you visually see the stem's movement, so you can tell if the valve is open or closed directly. It also makes maintenance easier, as you can check the gate and seal wear by observing the stem's position.

2. NBR Seal Media Compatibility

Q: What fluids should be avoided with the NBR-coated ductile iron seal?
A: NBR (Nitrile Butadiene Rubber) works well with water, oil, and general industrial fluids. But avoid strong acids, alkalis, ketones, or esters-these can degrade NBR, causing leaks. For such media, use a valve with FKM seals instead.

3. Installation Flow Direction

Q: Does this gate valve have a required flow direction during installation?
A: Gate valves are typically bi-directional (seal both ways). But it's recommended to install according to the "flow arrow" on the valve or the common fluid direction for even gate stress. Ensure the stem is vertical upward for easy operation and visibility.

4. Maintenance Frequency and Key Checks

Q: How often should this valve be maintained, and what parts need focus?
A: Maintain every 3-6 months. Focus on: lubricating the 2CR13 stainless steel stem (use grease), inspecting the NBR seal for cracks/wear, checking flange connections for leaks, and ensuring the handwheel turns smoothly.

5. Sizing for Piping

Q: How to choose the right valve size (e.g., 2 inch vs. 16 inch)?
A: Match the valve size to your pipe's nominal diameter (DN). For a DN50 pipe, choose Z41X-16Q-50 (2 inch); for DN400, choose Z41X-16Q-400 (16 inch). This ensures proper flow and no installation issues.

6. 2CR13 Stem Corrosion Resistance

Q: How does the 2CR13 stainless steel stem hold up in humid environments?
A: 2CR13 stainless steel resists rust well in most humid settings. For coastal or high-moisture areas, clean the stem regularly and apply a stainless-steel protectant to extend its life.

7. Handwheel Operation Torque

Q: Is the handwheel hard to turn, and does torque change with valve size?
A: The handwheel torque depends on the valve size-larger valves (e.g., 16 inch) require more force than smaller ones (e.g., 2 inch). But the design ensures smooth operation; if turning becomes stiff, check for stem corrosion or insufficient lubrication.

8. Epoxy Coating Durability Outdoors

Q: How long does the epoxy red/blue coating last in outdoor conditions?
A: In typical outdoor environments, the epoxy coating lasts 5-8 years. For harsh conditions (e.g., direct sunlight, heavy rain), inspect yearly for chipping. Touch up with matching epoxy paint if damage occurs.

9. Working Pressure Selection

Q: When to use 1.0MPa vs. 1.6MPa working pressure?
A: Choose 1.0MPa for systems with lower pressure demands, and 1.6MPa for higher-pressure applications. Ensure your system's pressure never exceeds the valve's working pressure to avoid damage.

10. Gate Valve vs. Globe Valve Use Cases

Q: When is this gate valve better than a globe valve?
A: Gate valves are ideal for full-open/full-close applications with minimal flow restriction (e.g., main water lines). Globe valves are better for throttling (controlling flow rate) but have higher pressure loss. Use this gate valve when you need bi-directional sealing and low flow resistance.

Order Information

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